-
How to Grow Cotton to Prevent Square and Boll Shedding
(1) General patterns of square and boll shedding. ① Ratio of square and boll shedding: In square and boll shedding, the overall trend in the ratio of square shedding to boll shedding is that the boll shedding rate is higher than the square shedding rate, with a ratio of about 3:2. ② Age of squares and bolls at shedding: After squaring, shedding is greatest at 11-20 days, while shedding of large squares over 20 days old is less. Young bolls 3-8 days after flowering are most prone to shedding, with 3-5 days being the most common, while young bolls over 10 days old rarely shed.
-
How to prevent premature senescence in cotton? Cotton farmers learn these three methods
Entering July to August is the peak period of massive flowering and boll setting in cotton, the key period for cotton yield formation, and also the peak period of cotton fertilizer demand. If fertilizer cannot keep up during this period, cotton will suffer premature senescence due to fertilizer deficiency, causing massive shedding of squares and bolls, resulting in substantial yield reduction and serious losses.
-
How to prevent flower and pod drop in soybean cultivation
1. Topdressing according to local conditions and seedling condition. For fields where the plants cannot close the rows in time during the flowering period due to lack of fertilizer, topdress once more at the early flowering stage. Generally, apply 5 kg of urea or 10 kg of ammonium sulfate per mu, which can reduce flower and pod drop. 2. Foliar spraying. During the flowering and podding stage, generally use per mu
-
Precautions for Drought Prevention and Water Retention in Polyporus umbellatus Cultivation
Polyporus umbellatus is a fungus of the family Polyporaceae, and its underground sclerotium is a rare traditional Chinese medicinal material, with effects such as promoting diuresis and draining dampness, and relieving strangury and reducing swelling. Polyporus umbellatus is mostly supplied to the market as wild product, and wild Polyporus umbellatus is distributed in mountainous areas at an altitude of 1000-2000 m. In recent years, with excessive digging in Polyporus umbellatus production areas,
-
What are the disease prevention and control methods for licorice cultivation?
The main diseases of licorice are: rust, brown spot and powdery mildew. The prevention and control methods are as follows: 1. Rust: when infected, yellowish-brown scar-like lesions appear on the underside of the leaves; after the epidermis ruptures, brown powder is released, which is the uredinium of the pathogen; in August-September, dark brown telia
-
How to prevent and control apple fruit cracking? Growers, master these key points
In recent years, apple fruit cracking is a common disease in production, seriously affecting fruit quality. The causes and prevention methods of apple fruit cracking are introduced below. Apple fruit cracking manifests as cracks or fissures on the fruit. There are various forms of fruit cracking: some split longitudinally from the side of the fruit,
-
How to prevent and control mango sooty mould? Be sure to guard against this disease when growing mangoes
In recent years, mango sooty mould has caused increasingly serious damage to mango fruit, greatly affecting fruit quality. Below is a brief introduction to the symptoms and damage of sooty mould, the occurrence of the disease, and control methods, for the reference of fellow fruit growers. 1. Symptoms and
-
How to prevent and control arrowhead scale damage to young fruit when growing citrus
The citrus arrowhead scale is currently one of the main pests in citrus orchards in eastern Guangdong and northern Guangdong, with more than 50% of the orchard area in these regions affected to varying degrees, impacting production. The author conducted systematic fixed-point, regular observations of the occurrence of the citrus arrowhead scale, and carried out
-
How to prevent and control citrus fruit cracking? Master these cultivation techniques
Every year in June and July, after the second physiological fruit drop, citrus generally does not drop fruit, but then fruit cracking of varying degrees occurs. The peak period of fruit cracking generally occurs in early August and in the two periods from late August to early September. Citrus fruit cracking is one of the important physiological diseases of citrus during the fruit-swelling period.
-
How to Prevent Fruit Cracking in Citrus? Growing Experience Shared
Citrus fruit cracking occurs every year, and it is most severe after the Mid-Autumn Festival, causing heavy losses for fruit growers. The main cause of citrus fruit cracking is unbalanced water supply. For example, severe cracking occurs after a long drought followed by heavy rain. The following measures can reduce the occurrence of fruit cracking.
条件筛选